In the control unit of the electric rolling stock where return electric current flows

摘要

PROBLEM TO BE SOLVED: To effectively suppress a specified frequency component generated in a retrace line current.;SOLUTION: The rotational angular speed ωr of a motor is detected, a torque correction command ΔT* is operated on the basis of a specified frequency component included in the ωr, a d-axis voltage correction command dVd*, a q-axis voltage correction command dVq*, a q-axis current correction command dIq*, and an angular speed correction command dω1* are operated on the basis of the torque correction command ΔT*, and these correction commands are added to a d-axis voltage command, a q-axis voltage command, a q-axis current command, and an angular speed command respectively to control a DC current of a first power converter. By this, the specified frequency component included in the DC current is canceled, and the specified frequency component is effectively suppressed.;COPYRIGHT: (C)2010,JPO&INPIT